Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 42, Problem 4TYU
Summary Introduction
Introduction:
The bacteria fixing the nitrogen content for the availability of plants are called nitrogen fixing bacteria. The inorganic nitrogen or atmospheric nitrogen is converted into organic nitrogen for the easy absorption by plants.
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What process brings nitrogen from the atmosphere into living system?
A. Methanogenesis
B. Denitrification
C. Anammox
D. Nitrogen fixation
E. Nitrification
Which of the following statements is/are TRUE for nitrogen fixation?
A. Process is performed by nitrifying soil bacteria.
B. Performed by bacteria present in the roots of all plants.
C. Reduction of N2 to NH3.
D. Consumes a negligible amount of ATP.
Which of the following is a process of the nitrogen cycle that involves the conversion of nitrogen gas to ammonia?
a.Nitrogen fixation
b.Nitrification
c.Ammonification
d.Denitrification
Chapter 42 Solutions
Campbell Biology in Focus
Ch. 42.1 - Why is the transfer of energy in an ecosystem...Ch. 42.1 - WHAT IF? You are studying nitrogen cycling on the...Ch. 42.1 - MAKE CONNECTIONS Use the second law of...Ch. 42.2 - Why is only a small portion of the solar energy...Ch. 42.2 - How can ecologists experimentally determine the...Ch. 42.2 - Prob. 3CCCh. 42.2 - Prob. 4CCCh. 42.3 - If an insect that eats plant seeds containing 100...Ch. 42.3 - WHAT IF? Detritivores are consumers that obtain...Ch. 42.4 - Prob. 1CC
Ch. 42.4 - Prob. 2CCCh. 42.4 - Prob. 3CCCh. 42.5 - Prob. 1CCCh. 42.5 - How do bioremediation and biological augmentation...Ch. 42.5 - Prob. 3CCCh. 42 - Prob. 1TYUCh. 42 - Which of these ecosystems has the lowest net...Ch. 42 - Prob. 3TYUCh. 42 - Prob. 4TYUCh. 42 - Which of the following has the greatest effect on...Ch. 42 - Prob. 6TYUCh. 42 - Prob. 7TYUCh. 42 - Prob. 8TYUCh. 42 - INTERPRET THE DATA Draw a simplified global water...Ch. 42 - SCIENTIFIC INQUIRY Using two neighboring ponds in...Ch. 42 - Prob. 11TYUCh. 42 - FOCUS ON ENERGY AND MATIER Decomposition typically...Ch. 42 - Prob. 13TYU
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- Organic forms of nitrogen are converted to inorganic forms via what process? a)photosynthesis b)consumption c)nitrogen fixation d)decompositionarrow_forwardWhich of these occurs through symbiotic nitrogen fixation? a. The plant benefits from using an endless source of nitrogen. b. The soil benefits from being naturally fertilized. c. Bacteria benefit from using photosynthates from the plant. d. All of the above occur.arrow_forwardWhich of the following processes is/are used to fix atmospheric N2? a.bacterial action b.Haber process c.lightning d.transaminationarrow_forward
- Which essential chemical must be “fixed” by soil-dwelling bacteria before it can enter the food chain? a. Carbon b. Nitrogen c. Phosphorous d. Both a. and b.arrow_forwardAdding high levels of nutrients to a lake or inshore area wouldhave all of the following effects in that environment excepta) death of clams and crabs.b) increased growth of heterotrophic microbes.c) increased growth of photosynthetic organisms.d) increased levels of dissolved O2 .arrow_forwardWhat incentives cause humans to capture nitrogen from the air and pump it into the nitrogen cycle? What are some consequences of human augmentation of the nitrogen cycle?arrow_forward
- Use of synthetic fertilizers often leads to the contamination of groundwater with nitrates. Nitrate pollution is also a suspected cause of anoxic "dead zones" in the ocean. Which of the following processes is most likely to help reduce nitrate pollution? A. adding methanogens to the soil B. adding nitrifying bacteria to the soil C. adding denitrifying bacteria to the soil D. using ammonia instead of nitrate as a fertilizerarrow_forwardNitrogen fixation is the processa. that converts organic nitrogen to NH3.b. by which plants and animals take up NO3–.c. by which bacteria convert NO3– to N2.d. by which N2 is converted to NH3 or NH4+.e. All of the above are true of nitrogen fixation.arrow_forwarda.Briefly describe the roles of Rhizobium, Nitrosomonas, Nitrobacter and Pseudomonasbacteria in the nitrogen cycle (about 200 words). b. Provide one example for each of the following from the sulfur cycle: a biotic flux a natural abiotic flux an anthropogenic flux..arrow_forward
- Mention 5 examples that can carry out the metabolic pathways of assimilation in the nitrogen cycle.arrow_forwardPlants obtain ______ by taking it up from the air. a. nitrogen c. phosphorus b. carbon d. waterarrow_forwardFigure 46.17 Which of the following statements about the nitrogen cycle is false? Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+). Denitrification by bacteria converts nitrates (NO3-) to nitrogen gas (N2). Nitrification by bacteria converts nitrates (NO3) to nitrites (NO2-). Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds.arrow_forward
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